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<a name="gst-plugins-good-plugins-rtpulpfecdec"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-rtpulpfecdec.top_of_page"></a>rtpulpfecdec</span></h2>
<p>rtpulpfecdec — Generic RTP Forward Error Correction (FEC) decoder</p>
</td>
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<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--pt" title="The “pt” property">pt</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--recovered" title="The “recovered” property">recovered</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--storage" title="The “storage” property">storage</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--unrecovered" title="The “unrecovered” property">unrecovered</a></td>
<td class="property_flags">Read</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstRtpUlpFecDec"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<col width="150px" class="name">
<col class="description">
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec-struct" title="struct GstRtpUlpFecDec">GstRtpUlpFecDec</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
                <span class="lineart">╰──</span> GstRtpUlpFecDec
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.description"></a><h2>Description</h2>
<p>Generic Forward Error Correction (FEC) decoder for Uneven Level
Protection (ULP) as described in RFC 5109.</p>
<p>This element will work in combination with an upstream <a class="link" href="gst-plugins-good-plugins-rtpstorage.html#GstRtpStorage"><span class="type">GstRtpStorage</span></a>
element and attempt to recover packets declared lost through custom
'GstRTPPacketLost' events, usually emitted by <a class="link" href="gst-plugins-good-plugins-rtpjitterbuffer.html#GstRtpJitterBuffer"><span class="type">GstRtpJitterBuffer</span></a>.</p>
<p>As such, this element cannot be usefully used from the command line,
because a reference to the upstream storage object needs to be
provided to it through its <a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--storage" title="The “storage” property"><span class="type">“storage”</span></a> property, example
programs are available at
<a class="ulink" href="https://github.com/sdroege/gstreamer-rs/blob/master/examples/src/bin/rtpfecserver.rs" target="_top">https://github.com/sdroege/gstreamer-rs/blob/master/examples/src/bin/rtpfecserver.rs</a>
and
<a class="ulink" href="https://github.com/sdroege/gstreamer-rs/blob/master/examples/src/bin/rtpfecclient.rs" target="_top">https://github.com/sdroege/gstreamer-rs/blob/master/examples/src/bin/rtpfecclient.rs</a>.</p>
<p>Additionally, the payload types of the protection packets *must* be
provided to this element via its <a class="link" href="gst-plugins-good-plugins-rtpulpfecdec.html#GstRtpUlpFecDec--pt" title="The “pt” property"><span class="type">“pt”</span></a> property.</p>
<p>When using <a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin"><span class="type">GstRtpBin</span></a>, this element should be inserted through the
<a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin-request-fec-decoder" title="The “request-fec-decoder” signal"><span class="type">“request-fec-decoder”</span></a> signal.</p>
<p>See also: <a class="link" href="gst-plugins-good-plugins-rtpulpfecenc.html#GstRtpUlpFecEnc"><span class="type">GstRtpUlpFecEnc</span></a>, <a class="link" href="gst-plugins-good-plugins-rtpbin.html#GstRtpBin"><span class="type">GstRtpBin</span></a>, <a class="link" href="gst-plugins-good-plugins-rtpstorage.html#GstRtpStorage"><span class="type">GstRtpStorage</span></a></p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.227.7.8.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-good-plugins-plugin-rtp.html#plugin-rtp">rtp</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Mikhail Fludkov &lt;misha@pexip.com&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Depayloader/Network/RTP</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.227.7.8.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>application/x-rtp</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>application/x-rtp</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstRtpUlpFecDec-struct"></a><h3>struct GstRtpUlpFecDec</h3>
<pre class="programlisting">struct GstRtpUlpFecDec;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-rtpulpfecdec.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstRtpUlpFecDec--pt"></a><h3>The <code class="literal">“pt”</code> property</h3>
<pre class="programlisting">  “pt”                       <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>FEC packets payload type.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &lt;= 127</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpUlpFecDec--recovered"></a><h3>The <code class="literal">“recovered”</code> property</h3>
<pre class="programlisting">  “recovered”                <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>The number of recovered packets.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpUlpFecDec--storage"></a><h3>The <code class="literal">“storage”</code> property</h3>
<pre class="programlisting">  “storage”                  <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *</pre>
<p>RTP storage.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRtpUlpFecDec--unrecovered"></a><h3>The <code class="literal">“unrecovered”</code> property</h3>
<pre class="programlisting">  “unrecovered”              <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>The number of unrecovered packets.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
</div>
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